An over-damped vibration compound dynamics simulation device

Abstract

The application provides an over-weight vibration compound dynamics simulation device, which comprises a vehicle body, a sliding mechanism, a supporting beam, a centrifugal mechanism, an up-down vibration mechanism and a radial vibration mechanism; the top of the vehicle body is connected with the centrifugal mechanism, the bottom of the vehicle body is provided with a groove, one end of the supporting beam is arranged in the groove, the other end of the supporting beam is fixed on the ground, the supporting beam is movably connected with the groove through the sliding mechanism, the radial vibration mechanism is installed in the inside of the end of the supporting beam far from the ground, and the up-down vibration mechanism is installed between the groove and the end of the supporting beam, which is provided with the radial vibration mechanism; the application adopts the characteristics of small friction resistance of the magnetic suspension technology, the vehicle body generates different rotating speeds under the driving of the centrifugal mechanism, so that different training requirements are met, the current size of the suspension electromagnet is controlled, and finally the up-down vibration and the radial vibration of the vehicle body are realized, and the complex vibration conditions in the actual situation are more met.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of space dynamics simulation, in particular to a supergravity-vibration compound dynamics simulation device. BACKGROUND

[0002] In the field of space, astronauts and space products will inevitably be in a complex working environment in which vibration and supergravity are superimposed on each other. For example, in order to overcome the earth's gravity, the spacecraft uses the power of the rocket to gradually accelerate to the orbital speed during the launch process. During the acceleration process, the inertial force generated by the acceleration causes the astronauts in the manned spacecraft to be in a supergravity state. The supergravity overload of the spaceship during launch can reach 5-8g, and the space shuttle can be controlled at a level of 3g. When the spacecraft completes the orbital flight and returns to the ground, the deceleration of the spacecraft by the braking rocket and the aerodynamic deceleration during reentry into the atmosphere will also bring a large overload to the astronauts in the spacecraft, and its duration and peak value are related to the reentry angle during the spacecraft's reentry and the spacecraft's own power state. The maximum overload value of the spaceship during normal return is usually between 4-5g, and the overload value of the space shuttle will not exceed 3g. In an emergency return under abnormal circumstances, the supergravity overload value will far exceed the normal range, and the astronauts may encounter 8-15g and above supergravity overload during the emergency escape of the spaceship during the launch phase. Research shows that the longitudinal supergravity overload (also known as head-pelvis supergravity) and the transverse supergravity overload (also known as chest-back supergravity) have a greater impact on the human body during the supergravity overload experienced by astronauts for tens of seconds to minutes. In addition, astronauts will also be disturbed by the vibration of the spacecraft. At the same time, space products also need to be able to adapt to the supergravity-vibration environment during design and manufacturing. Therefore, it is necessary to establish a dynamics device suitable for simulating supergravity-vibration compound conditions on a plane.

[0003] CONTENT

[0004] In order to overcome the shortcomings of the prior art, the present application provides a supergravity-vibration compound dynamics simulation device, which comprises a vehicle body 5, a sliding mechanism, a supporting beam 1, a centrifugal mechanism, an up-down vibration mechanism, and a radial vibration mechanism.

[0005] The top of the vehicle body 5 is connected with the centrifugal mechanism, the bottom of the vehicle body 5 is provided with a groove, one end of the supporting beam 1 is arranged in the groove, the other end of the supporting beam 1 is fixed to the ground, the supporting beam 1 is movably connected with the groove through the sliding mechanism, the radial vibration mechanism is installed in the inside of the end of the supporting beam 1 away from the ground, and the up-down vibration mechanism is installed between the groove and the end of the supporting beam 1 where the radial vibration mechanism is installed.

[0006] The up-down vibration mechanism is used for controlling the suspension of the vehicle body 5 and realizing the vibration in the vertical direction.

[0007] The radial vibration mechanism is used for controlling the vehicle body 5 to realize horizontal vibration.

[0008] Preferably, the up-and-down vibration mechanism comprises a suspension electromagnet 2, a controller 15 and a gap sensor 16; the groove is a T-shaped slot with an open end facing the ground, one side of the suspension electromagnet 2 is connected to the inside of the T-shaped slot near the ground, the other side of the suspension electromagnet 2 is connected to the controller 15, the side of the controller 15 away from the suspension electromagnet 2 is connected to the gap sensor 16, and the side of the gap sensor 16 away from the controller 15 is spaced apart from the supporting beam 1.

[0009] The gap sensor 16 is used for detecting the distance between the suspension electromagnet 2 and the supporting beam 1 and transmitting a distance signal to the controller 15.

[0010] The controller 15 is used for controlling the current in the suspension electromagnet 2 according to the distance signal transmitted by the gap sensor 16, when the gap sensor 16 detects that the distance between the suspension electromagnet 2 and the supporting beam 1 is greater than a fixed value d, the controller 15 increases the current in the suspension electromagnet 2 to generate a stronger attractive force, so that the vehicle body 5 moves upward, and when the gap sensor 16 detects that the distance between the suspension electromagnet 2 and the supporting beam 1 is less than or equal to the fixed value d, the controller 15 reduces the current in the suspension electromagnet 2 to generate a weaker attractive force, so that the vehicle body 5 moves downward.

[0011] Preferably, two up-and-down vibration mechanisms are symmetrically arranged on the side of the groove of the vehicle body 5 near the ground.

[0012] Preferably, the supporting beam 1 has a T-shaped structure, one end of the T-shaped structure parallel to the ground is movably connected to the groove through a sliding mechanism, and the other end of the T-shaped structure is fixed to the ground.

[0013] Preferably, the radial vibration mechanism comprises a vibration electromagnet 3 and a spring device 4, one end of the spring device 4 is connected to the inside of the end of the T-shaped structure parallel to the ground, and the other end of the spring device 4 is connected to the vibration electromagnet 3.

[0014] Preferably, two radial vibration mechanisms are symmetrically arranged on the two ends of the end of the T-shaped structure parallel to the ground.

[0015] Preferably, the sliding mechanism comprises oppositely arranged sliding support shafts 6 and supporting skids 7, the supporting skids 7 are connected to the vehicle body 5, and the sliding support shafts 6 are connected to the supporting beam 1.

[0016] When the whole device is stationary, the sliding support shafts 6 are in contact with the supporting skids 7.

[0017] Preferably, the centrifugal mechanism comprises: connecting rod 8, working swing arm 9, working main shaft 10 and electric drive assembly connected in sequence;

[0018] The end of the connecting rod 8 away from the working swing arm 9 is connected to the top of the vehicle body 5, the working swing arm 9 is arranged in parallel with the ground, and the connecting rod 8 and the working main shaft 10 are respectively connected to the two ends of the working swing arm 9 perpendicularly, and the electric drive assembly is fixedly installed on the ground.

[0019] Preferably, the electric drive assembly comprises: gear box 11, shaft coupling 12, motor 13 and motor base 14 connected in sequence; the gear box 11 is connected to the working main shaft 10 away from the motor 13, and the gear box 11 and the motor base 14 are respectively fixedly installed on the ground.

[0020] Preferably, the connecting rod 8 is a telescopic connecting rod, and the two ends of the telescopic connecting rod are both circular through hole structures.

[0021] Compared with the closest prior art, the application has the beneficial effects as follows:

[0022] A super-weight vibration composite dynamics simulation device comprises: vehicle body 5, sliding mechanism, supporting beam 1, centrifugal mechanism, up-down vibration mechanism and radial vibration mechanism; the top of the vehicle body 5 is connected with the centrifugal mechanism, the bottom of the vehicle body 5 is provided with a groove, one end of the supporting beam 1 is arranged in the groove, the other end of the supporting beam 1 is fixed on the ground, the supporting beam 1 is movably connected through the sliding mechanism and the groove, the radial vibration mechanism is installed in the inside of the end of the supporting beam 1 away from the ground, and the up-down vibration mechanism is installed between the groove and the end of the supporting beam 1 on which the radial vibration mechanism is installed; the up-down vibration mechanism is used for controlling the vehicle body 5 to be suspended and realizing vibration in the vertical direction; the radial vibration mechanism is used for controlling the vehicle body 5 to realize vibration in the horizontal direction; the device adopts magnetic suspension technology, the resistance is smaller in the process of rotation, and it is easier to realize different sizes of centrifugal force, thereby meeting the training requirements in different situations; the distance between the supporting beam 1 and the suspension electromagnet 2 is changed by controlling the electric current, and up-down vibration is realized; the vibration electromagnet 3 is installed at the two ends of the supporting beam 1, and radial vibration is realized through close cooperation of each other, and the vibration form is rich; since the vehicle body 5 is connected with the working swing arm 9 through the connecting rod 8, the safety of astronaut training and space product experiment is improved to a certain extent. BRIEF DESCRIPTION OF DRAWINGS

[0023] Figure 1 A super-weight vibration composite dynamics simulation device provided by the application is shown in the schematic view;

[0024] Figure 2 A partial schematic diagram of the suspending electromagnet in a supergravity vibration composite dynamics simulation device provided in this application;

[0025] Figure 3 A schematic diagram of the state of the right electromagnet after operation in a composite dynamic simulation device for supergravity vibration provided in this application;

[0026] Figure 4 A schematic diagram of the connecting rod structure of a composite dynamic simulation device for supergravity vibration provided in this application;

[0027] Among them, 1-support beam, 2-suspending electromagnet, 3-vibration electromagnet, 4-spring device, 5-car body, 6-sliding support shaft, 7-support skid, 8-connecting rod, 9-working swing arm, 10-working spindle, 11-gearbox, 12-coupling, 13-motor, 14-motor base, 15-controller, 16-gap sensor. Detailed Implementation

[0028] The specific embodiments of this application will be further described in detail below with reference to the accompanying drawings.

[0029] Example 1:

[0030] This application discloses a composite dynamic simulation device for hypergravity vibration, such as... Figure 1 As shown, it includes: vehicle body 5, sliding mechanism, support beam 1, centrifugal mechanism, vertical vibration mechanism and radial vibration mechanism;

[0031] The top of the vehicle body 5 is connected to the centrifugal mechanism, and the bottom of the vehicle body 5 is provided with a groove. One end of the support beam 1 is located in the groove, and the other end of the support beam 1 is fixed to the ground. The support beam 1 is movably connected to the groove through a sliding mechanism. The radial vibration mechanism is installed inside the end of the support beam 1 away from the ground, and the vertical vibration mechanism is installed between the groove and the end of the support beam 1 where the radial vibration mechanism is installed.

[0032] The up-and-down vibration mechanism is used to control the suspension of the vehicle body 5 and to achieve vertical vibration;

[0033] The radial vibration mechanism is used to control the vehicle body 5 to achieve horizontal vibration.

[0034] In order to let astronauts withstand the overloading vibration during the launch and reentry of spacecraft, and ensure that the space products remain stable operation under the condition of overloading vibration, the application provides an overloading vibration compound dynamics simulation device. The device drives the rotation of the working spindle 10 through the motor 13, and can generate a large enough centrifugal force under the driving of the working arm 9, thereby meeting the overloading training requirements. The presence of the suspension electromagnet 2 can realize the up-down vibration of the vehicle body 5. The vibration electromagnet 3 is installed at both ends of the supporting beam 1, and the vibration electromagnet 3 is connected with the spring device 4, and the left and right vibration electromagnets 3 are closely matched, so as to realize the radial vibration of the vehicle body 5. In the process of vibration, the special structure of the connecting rod turntable can adapt to the left and right shaking of the vehicle body 5. In an emergency, the working arm 9 can forcibly control the rotating speed and smoothly brake, so as to not cause personnel injury too fast.

[0035] The technical scheme adopted is to fully utilize the small friction resistance of the magnetic suspension technology, and the vehicle body 5 generates different rotating speeds under the driving of the working arm 9, thereby meeting different training requirements.

[0036] As shown in Figure 2 The up-down vibration mechanism comprises a suspension electromagnet 2, a controller 15 and a gap sensor 16; the groove is a T-shaped groove with an open end facing the ground, one side of the suspension electromagnet 2 is connected to the inside of the T-shaped groove close to the ground, the other side of the suspension electromagnet 2 is connected to the controller 15, the side of the controller 15 away from the suspension electromagnet 2 is connected to the gap sensor 16, and there is a gap between the side of the gap sensor 16 away from the controller 15 and the supporting beam 1;

[0037] The gap sensor 16 is used to detect the distance between the suspension electromagnet 2 and the supporting beam 1, and transmit the distance signal to the controller 15;

[0038] The controller 15 is used to control the size of the current in the suspension electromagnet 2 according to the distance signal transmitted by the gap sensor 16, when the gap sensor 16 detects that the distance between the suspension electromagnet 2 and the supporting beam 1 is greater than a fixed value d, the controller 15 increases the current in the suspension electromagnet 2 to generate a stronger attractive force, so that the vehicle body 5 moves upward; when the gap sensor 16 detects that the distance between the suspension electromagnet 2 and the supporting beam 1 is less than or equal to a fixed value d, the controller 15 reduces the current in the suspension electromagnet 2 to generate a weaker attractive force, so that the vehicle body 5 moves downward.

[0039] The device generates different attractive forces between the base of the vehicle body 5 and the bottom of the support beam 1 by controlling the current of the levitation electromagnet 2, and finally realizes the up-and-down vibration of the vehicle body 5. In addition to the up-and-down vibration, the device can also realize radial vibration, which is more in line with the complex situation of vibration in actual situations. The support beam 1 is provided with vibration electromagnets 3 at both ends, and the vibration electromagnets 3 are connected with spring devices 4, which can be radially stretched and contracted. By starting and stopping the vibration electromagnets 3 at both ends, the radial vibration of the vehicle body 5 is realized. During the vibration of the vehicle body 5, it will undoubtedly produce different degrees of deviation. At this time, the connecting rod structure installed in the middle of the vehicle body 5 has only one degree of freedom, which can ensure the adaptation to the up-and-down and left-right shaking of the vehicle body 5. When the astronauts have physical discomfort during the training process or the space products are damaged during the operation process, the working rotating arm 9 can forcibly control the rotating speed, so that the vehicle body 5 stops at a stable speed, thereby ensuring the safety of the personnel.

[0040] Preferably, the up-and-down vibration mechanism is provided with two, and the two up-and-down vibration mechanisms are symmetrically arranged on one side of the inside of the recess of the vehicle body 5 close to the ground.

[0041] When the whole device is stationary, the sliding support shaft 6 is in contact with the support skid 7. When the whole device is running, the coil above the levitation electromagnet 2 is electrified, thereby generating magnetic attraction. The support beam 1 maintains a certain distance, about 10-15 mm, from the levitation electromagnet 2. At the same time, the motor 13 above the motor base 14 starts to rotate, the gear inside the gearbox 11 is driven to rotate through the shaft coupling 12, the working spindle 10 is finally driven to rotate, and the working rotating arm 9 is finally driven to rotate. The working rotating arm 9 is connected with the vehicle body 5 through the connecting rod 8. Since the vehicle body 5 maintains a certain distance from the support beam 1, the friction during the operation of the vehicle body 5 is very small, and the vehicle body 5 can easily reach an overweight state, which can meet the training requirements under different conditions.

[0042] When the rotating speed is stable, the vibration state is turned on, and the gap sensor 16 detects the distance between the levitation electromagnet 2 and the support beam 1 at all times, and sends the signal to the controller 15, which controls the size of the current. When the up-and-down vibration is performed, when the gap sensor 16 detects that the distance d between the levitation electromagnet 2 and the support beam 1 is greater than a fixed value, the controller 15 increases the size of the current, thereby generating a stronger attractive force, and the vehicle body 5 moves upward. When the gap sensor 16 detects that the distance d between the levitation electromagnet 2 and the support beam 1 is less than or equal to a fixed value, the controller 15 reduces the size of the current, thereby generating a weaker attractive force, and the vehicle body 5 moves downward. Such a cycle is repeated, and finally the up-and-down vibration is realized. Figure Four As shown, the connecting rod 8 can be stretched and contracted up and down when experiencing up-and-down vibration.

[0043] Preferably, the support beam 1 is a T-shaped structure, with one end of the T-shaped structure parallel to the ground being movably connected to the groove via a sliding mechanism, and the other end of the T-shaped structure being fixed to the ground.

[0044] like Figure 3 As shown, the radial vibration mechanism includes a vibration electromagnet 3 and a spring device 4. One end of the spring device 4 is connected to the interior of the end of the T-shaped structure that is parallel to the ground, and the other end of the spring device 4 is connected to the vibration electromagnet 3.

[0045] When the coil on the right side of the support beam 1 is energized, the vibrating electromagnet 3 on the right side generates an attractive force, causing the vehicle body 5 to move to the left. Simultaneously, the vibrating electromagnet 3 on the left side is stretched outwards by the spring device 4, ensuring sufficient distance to generate an attractive force that moves the vehicle body 5 to the right. To accommodate the movement of the vehicle body 5, the connecting rod 8 has circular through holes at both the top and bottom, allowing for a certain degree of rotation, thus causing the connecting rod 8 to tilt. After the vehicle body 5 has moved a certain distance to the left, the coil on the left side of the support beam 1 is gradually energized, while the current in the coil on the right side gradually decreases. The vibrating electromagnet 3 on the left side generates an attractive force, while the attractive force of the vibrating electromagnet 3 on the right side gradually decreases, causing the vehicle body 5 to move to the right. Simultaneously, the vibrating electromagnet 3 on the left side contracts inwards under the action of the spring device 4, and the spring device 4 on the right side activates, moving the vibrating electromagnet 3 on the right side to the right, maintaining a constant distance from the vehicle body 5. The connecting rod 8 will also tilt under these conditions. This cycle repeats, ultimately achieving the effect of radial vibration.

[0046] Preferably, there are two radial vibration mechanisms, which are symmetrically arranged at both ends of the T-shaped structure at the end parallel to the ground.

[0047] Vibrating electromagnets 3 with spring devices 4 are installed at both ends of the support beam 1. When the left vibrating electromagnet 3 is energized, the vehicle body 5 is attracted by electromagnetic force and moves to the right. At the same time, for the stable operation of the vehicle body 5, the right electromagnet moves to the right under the action of the spring device 4; when the right vibrating electromagnet 3 is energized, the vehicle body 5 is attracted by electromagnetic force and moves to the left. At the same time, for the stable operation of the vehicle body 5, the left electromagnet moves to the left under the action of the spring device 4; this rapid reciprocating motion achieves radial vibration of the vehicle body 5.

[0048] Preferably, the sliding mechanism includes: a sliding support shaft 6 and a support skid 7 disposed opposite to each other, the support skid 7 being connected to the vehicle body 5, and the sliding support shaft 6 being connected to the support beam 1;

[0049] When the entire device is stationary, the sliding support shaft 6 is in contact with the support skid 7.

[0050] Preferably, the centrifugal mechanism comprises: connecting rod 8, working swing arm 9, working main shaft 10 and electric drive assembly connected in sequence.

[0051] The connecting rod 8 is connected to the top of the vehicle body 5 at the end away from the working swing arm 9, the working swing arm 9 is arranged parallel to the ground, and the connecting rod 8 and the working main shaft 10 are respectively connected to the two ends of the working swing arm 9 perpendicularly, and the electric drive assembly is fixedly installed on the ground.

[0052] Preferably, the electric drive assembly comprises: gear box 11, shaft coupling 12, motor 13 and motor base 14 connected in sequence; the gear box 11 is connected to the working main shaft 10 at the side away from the motor 13, and the gear box 11 and the motor base 14 are respectively fixedly installed on the ground.

[0053] The device adopts magnetic suspension technology, has smaller resistance in rotation, and is easier to realize different sizes of centrifugal force, thereby meeting the training requirements in different situations; the device changes the distance between the supporting beam 1 and the suspension electromagnet 2 by controlling the current, realizes up-down vibration, and is provided with vibration electromagnets 3 at the two ends of the supporting beam 1, realizes radial vibration through close cooperation of each other, and has rich vibration forms. Since the vehicle body 5 is connected to the working swing arm 9 through the connecting rod 8, the safety of astronaut training and space product experiment is improved to a certain extent.

[0054] As shown in Figure 4 The connecting rod 8 is a telescopic connecting rod, and the two ends of the telescopic connecting rod are circular through hole structures.

[0055] The connecting rod 8 can be telescoped up and down when experiencing up-down vibration.

[0056] Finally, it should be noted that: the above examples are only used to illustrate the technical solutions of the present application and not to limit the scope of protection, although the present application has been described in detail with reference to the above examples, those skilled in the art should understand that: after reading the present application, those skilled in the art can make various changes, modifications or equivalent replacements to the specific embodiments of the application, but these changes, modifications or equivalent replacements are all within the scope of protection of the claims of the application.

Claims

1. An apparatus for superheavy vibrational compound dynamics simulation, characterized by, The utility model relates to a kind of vehicle, including: Vehicle body (5), sliding mechanism, support beam (1), centrifugal mechanism, up-down vibration mechanism and radial vibration mechanism; The top of the vehicle body (5) is connected with the centrifugal mechanism, the bottom of the vehicle body (5) is provided with a groove, one end of the support beam (1) is arranged in the groove, the other end of the support beam (1) is fixed on the ground, the support beam (1) is movably connected by sliding mechanism and the groove, the radial vibration mechanism is installed in the end of the support beam (1) far from the ground, the up-down vibration mechanism is installed between the groove and the end of the support beam (1) where the radial vibration mechanism is installed. The up-down vibration mechanism is used to control the vehicle body to float and realize vertical vibration. The radial vibration mechanism is used to control the vehicle body to realize horizontal vibration. The support beam (1) is T-shaped structure, one end of the T-shaped structure parallel to the ground is movably connected with the groove by sliding mechanism, the other end of the T-shaped structure is fixed on the ground. The radial vibration mechanism includes vibration electromagnet (3) and spring device (4), one end of the spring device (4) is connected with the inside of the end of the T-shaped structure parallel to the ground, the other end of the spring device (4) is connected with the vibration electromagnet (3). The radial vibration mechanism is provided with two, the two radial vibration mechanisms are symmetrically arranged at the two ends of the end of the T-shaped structure parallel to the ground.

2. The apparatus of claim 1, wherein, The up-down vibration mechanism includes levitation electromagnet (2), controller (15) and gap sensor (16), the groove is T-shaped slot with open end facing the ground, one side of the levitation electromagnet (2) is connected with the side close to the ground in the inside of the T-shaped slot, the other side of the levitation electromagnet (2) is connected with the controller (15), the side away from the levitation electromagnet (2) of the controller (15) is connected with the gap sensor (16), there is a gap between the side away from the controller (15) of the gap sensor (16) and the support beam (1). The gap sensor (16) is used to detect the distance between the levitation electromagnet (2) and the support beam (1) and transmit the distance signal to the controller (15). The controller (15) is used to control the size of current in the levitation electromagnet (2) according to the distance signal transmitted by the gap sensor (16), when the distance between the levitation electromagnet (2) and the support beam (1) detected by the gap sensor (16) is greater than a fixed value d, the controller (15) increases the current in the levitation electromagnet (2) to generate stronger attractive force, so that the vehicle body (5) moves upward, when the distance between the levitation electromagnet (2) and the support beam (1) detected by the gap sensor (16) is less than or equal to a fixed value d, the controller (15) reduces the current in the levitation electromagnet (2) to generate weaker attractive force, so that the vehicle body (5) moves downward.

3. The apparatus of claim 1, wherein, The up-down vibration mechanism is provided with two, the two up-down vibration mechanisms are symmetrically arranged on the side close to the ground in the inside of the groove of the vehicle body (5).

4. The apparatus of claim 1, wherein, The sliding mechanism comprises oppositely arranged sliding support shafts (6) and support skids (7), the support skids (7) are connected to the vehicle body (5), and the sliding support shafts (6) are connected to the support beams (1); When the whole device is stationary, the sliding support shafts (6) are in contact with the support skids (7).

5. The apparatus of claim 1, wherein, The centrifugal mechanism comprises a connecting rod (8), a working rotary arm (9), a working main shaft (10) and an electric drive assembly connected in sequence; One end of the connecting rod (8) away from the working rotary arm (9) is connected to the top of the vehicle body (5), the working rotary arm (9) is arranged in parallel with the ground, and the connecting rod (8) and the working main shaft (10) are respectively connected to the two ends of the working rotary arm (9) perpendicularly, and the electric drive assembly is fixedly installed on the ground.

6. The apparatus of claim 5, wherein, The electric drive assembly comprises a gearbox (11), a shaft coupling (12), a motor (13) and a motor base (14) connected in sequence; one side of the gearbox (11) away from the motor (13) is connected to the working main shaft (10), and the gearbox (11) and the motor base (14) are respectively fixedly installed on the ground.

7. The apparatus of claim 5, wherein, The connecting rod (8) is a telescopic connecting rod, and the two ends of the telescopic connecting rod are both circular through hole structures.

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